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Top Forums UNIX for Dummies Questions & Answers exec command and field descriptors.. Post 58925 by moxxx68 on Saturday 4th of December 2004 04:14:36 PM
Old 12-04-2004
where does :
exec 3
exec 4
exec 5
come into the picture.. ?
so far I have understood the stdout and stderr
but i don't see how this the use of exec or the use of fd 3 can write to a file. or how fd 4 can read stndin and how fd 5 can stdout to tty.. i am not making the connection between the numbers and the exec command basically for 3 to 5.
 

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AA-EXEC(8)							     AppArmor								AA-EXEC(8)

NAME
aa-exec - confine a program with the specified AppArmor profile SYNOPSIS
aa-exec [options] [--] [<command> ...] DESCRIPTION
aa-exec is used to launch a program confined by the specified profile and or namespace. If both a profile and namespace are specified command will be confined by profile in the new policy namespace. If only a namespace is specified, the profile name of the current confinement will be used. If neither a profile or namespace is specified command will be run using standard profile attachment (ie. as if run without the aa-exec command). If the arguments are to be pasted to the <command> being invoked by aa-exec then -- should be used to separate aa-exec arguments from the command. aa-exec -p profile1 -- ls -l OPTIONS aa-exec accepts the following arguments: -p PROFILE, --profile=PROFILE confine <command> with PROFILE. If the PROFILE is not specified use the current profile name (likely unconfined). -n NAMESPACE, --namespace=NAMESPACE use profiles in NAMESPACE. This will result in confinement transitioning to using the new profile namespace. -f FILE, --file=FILE a file or directory containing profiles to load before confining the program. -i, --immediate transition to PROFILE before doing executing <command>. This subjects the running of <command> to the exec transition rules of the current profile. -v, --verbose show commands being performed -d, --debug show commands and error codes -- Signal the end of options and disables further option processing. Any arguments after the -- are treated as arguments of the command. This is useful when passing arguments to the <command> being invoked by aa-exec. BUGS
If you find any bugs, please report them at <http://https://bugs.launchpad.net/apparmor/+filebug>. SEE ALSO
aa-stack(8), aa-namespace(8), apparmor(7), apparmor.d(5), aa_change_profile(3), aa_change_onexec(3) and <http://wiki.apparmor.net>. AppArmor 2.7.103 2012-06-28 AA-EXEC(8)
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